Granted Patent
Utility
US 6,723,481 · App. 09/853,410
Method for using hard magnetic carriers in an electrographic process
Inventors:
Patrick M. Lambert, Eric C. Stelter, William K. Goebel, Peter S. Alexandrovich
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: May 11, 2001
Inventors
Patrick M. Lambert
Eric C. Stelter
William K. Goebel
Peter S. Alexandrovich
Assignees (at issue)
Heidelberger Druckmaschinen AG
NexPress Solutions LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.